Andy (Ed Helms) decides to throw a garden party to impress Robert California (James Spader). Dwight (Rainn Wilson) researches how to host a garden party and thinks he has made it a very classy event. Meanwhile, Andy's parents (Stephen Collins and Dee Wallace) and brother (guest star Josh Groban) attend but make him feel self-conscious. John Krasinski, Jenna Fischer, B.J. Novak, Leslie David Baker, Phyllis Smith, Angela Kinsey, Brian Baumgartner, Oscar Nunez, Kate Flannery, Paul Lieberstein, Mindy Kaling.